# How to set the \_field tag to write to influxdb using the influxdb out node?
**URL:** https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990
**Category:** General
**Created:** [10 February 2023 11:25 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990 "2023-02-10T11:25:23Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@HerrLux](https://discourse.nodered.org/u/HerrLux)
#### Post date: [10 February 2023 11:25 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/1 "2023-02-10T11:25:23Z")
Hey everyone,
I'm new to node-red and already learned a lot from browsing this forum.
I have a little flow that right now uses a single object to write a value into influx db using the influxdb out node.
My problem is, that the entries made in influxdb have `_value` as the `_field` tag where I want it do be `AT` and I don't get why that is. The object send to the influxdb out node is
I am thankful for hints and ideas and happy to learn.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [10 February 2023 11:53 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/2 "2023-02-10T11:53:27Z")
Welcome to the forum @HerrLux
As described in the help text for the node, you can pass on object in msg.payload with the property `AT` set to the value.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [10 February 2023 15:26 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/3 "2023-02-10T15:26:44Z")
You do that in a Change node configured like this
Then feed that into a Debug node to make sure it looks right before connecting to the Influx node.
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### Author:  [@HerrLux](https://discourse.nodered.org/u/HerrLux)
#### Post date: [10 February 2023 15:31 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/4 "2023-02-10T15:31:18Z")
Thank you very much Colin.
In between your two replies I came up with a function note that does the trick for me
```auto
msg.payload = [{
"AT": msg.payload,
}];
return msg;
```
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [10 February 2023 17:05 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/5 "2023-02-10T17:05:20Z")
If you want to do it in a function (which is less efficient than a change node) then you can take out the square brackets. It doesn't need to be an array. Again, see the help text for the node.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [11 April 2023 17:06 UTC](https://discourse.nodered.org/t/how-to-set-the-field-tag-to-write-to-influxdb-using-the-influxdb-out-node/74990/6 "2023-04-11T17:06:00Z")
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